Giga counts per second 10 2 10 1 Count rate [SiPM current/Equation 3] (30020) Count rate [Non-paralysable model] (30020) Count rate [SiPM current/Equation 3] (30035) Count rate [Non-paralysable model] (30035) 10 0 10 -1 10 -2 10 -3 10 -2 10 -1 Irradiance [mW/m2] 10 0 10 1